ul {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

.header {
    width: 1190px;
    height: 200px;
    background-color: orange;
    margin: 0 auto 10px;
}

.nav {
    width: 100%;
    height: 60px;
    background-color: #abcdef;
}